Gas-burner.



F. E. KUNG & L. B. WEIDLUN.

GAS BURNER.

AvPLlCATmN FILED lune I9. Ime.

1,202,736. 'mmm 1m. 24, 19u):

2 SHEEXS-SHEET l.

FIGA

WITN ESSES Mdm F. E. KUNG L L. B. WEIDLEIN.

GAS BURNER.

APPLICATION FSLED IUNE T9, X916. 1,202,736. Patented on. 24,1916.

2 SHEEIS-SHET 2.

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UNITED STATES PATENT oEEIoE.

FRED E KLING AND LUTHER B. WEIDLEIN, OF Y0UllGfS'lOJN',F OHIO.

GAE-BURNER.

To all 'whom it may concern:

Be it' knowrithat we, FRED E. KLlNo and LUTHER B. WEIDLEIN, bothcitizens of the United States, and ,residents of Youngstown, in the county of Mahoning and State of Ohio, have invented certain new and useful Improvements in Gras-Burners, of which bustible gases and air are caused to inti-` mately mix and whereby the mixture of gas and-air is uniformly distributed over the Width of the combustion chamber of the steam boiler furnace. Another object of our invention is to providea gas burner having novel means whereby the combustible gases and air are stratified and caused to enter the gas burner mixing chamber in a series of thin, wide layers or streams, uniformly ldistributed over the width ofthe furnace combustion chamber.

A further object of the invention is to provide a gas burner having improved means whereby the quantity of air supplied to the burner and mixed with the combustible gases is regulated and controlled with changes in the pressure of the gases.

y Still further objects of our invention consist in the provision of the novel constructions, combinations and arrangements of parts shown in the drawings, more fully described hereinafter, and particularly specified in the appended claims.

eferring now to the drawings forming part of this specification, Figure l is a sec-I tional side elevation showing the front end of the combustion chamber of a steam boiler furnace having a gas burner constructed and arranged and applied for-use therewith in accordance with our invention. Fig. 2 is an chamber burner.

end; elevation of the gas burner shown in Fig. 1. Fig. 3 is a sectional plan, the section being taken on the line III*III of Fig. l, showing details in the construction of the air and orming part of our improved gas Fig. 4 1s a sectional end elevation. the section being taken on the line. IV-IV of Fig. 3, showing the partitions in the primary nozzle for delivering the gases `and Specicatlon of Letters Patent.

y veniently be employed as 1gas passages'in the distributing' Patented oef. 24, 191e.

Application filed June 19, 1916. Serial No. 104,540.

air in stratified layers into the secondary nozzle of our improved gas burner.

In the accompanying drawings, the nu, meral 2 designates a vertical gas flue leading downwardly from a horizontal overhead gas main (not shown) to the gas inlet 3 of a gas box 4. A dust side of the gas box opens into the upper end of a` vertical dust collecting leg 5, the gas inlet 3 and dust outlet 5 being in vertical alinement. The hollow dust leg 5 may cona` support for the gas box and for part of the weight e the horizontal overhead gas main located `)ove the gas box. A leanlng door on the bottom yof the hollow dust leg provides means for removing accumulations of dust therefrom.

The gas box 4 winch 1s arranged to extend lengthwise 1n front of a 'steam boller Vfurnace has ends overhanging the dust leg 5 and suspended from the lower side or bottom of the gas box at each end thereof is u gas distributing chamber 6 forming part of our improved gas burner. The open upper ends of thedistributing chambers connect into the interior of the gas box 4 and a dish valve 7 is employed to close the opening-into the distributing chambers and to regulate and control the flow of gas into each gas distributing chamber G. Eachvalve 7 has a vertical steih 8 which extends upwardly through a` stuffing box and gland on the head 9 closing the opening in the upper face of the gas box 4, and the valve stem is pivotally connected to one end of a counterweighted swinging lever "10. The lever 10 is pivotally connected by a link 11 to an ear or lug l2 on the head 9 and the weighted end of the lever 10 ispivotally connected to the upper end of a depending arm 13 having a grip 14 at its swinging lower end. Notches 15 i'n .one edge of the arm 13 coact with a pin in the bracket 16 on the ends of the gas distributing chambers G to hold the valve`7 in adjusted position.

The suspended gas distributing chambers 6 are Wide and shallow and of relativelyr ranged to register withthe inlet openings to` the air tubes 17. `By adjusting the slide 18 on its ways, the size of the air inlets to the air tubes 1s lessened so as to regulate the volume of air enterin the gas birner through the air tubes 17. .he air tubes 17 are liaitened at their discharge ends so as to lessen the height of and materially increase the width of the air outlets lil at the discharge end of these tubes, so that in effect the outlets 19 form what is substantially a single discharge outlet. thin, vertical partition walls 20 being all that separate the 'outlets one from anotheil, (see Fig.

The horizontal walls 22, 22, which define the width of the oi tlets oi" the air tubes 1.7, and the adjacent wa ls 28, 23, of the gas distributingir chamber 6,'form two wide, sha1 low slots 24 through which the gas enters the primary nozzle 2l in two thin flat sheets, one above and one below the intermi-idiato thin sheet of air emerging Vfrom the discharge end 19 of the air tubes 17. (See Figs 1 and 3.) The routlets 19 discharge into the; primary nozzle 21 which is fastened in place` between the discharge side of the i/as dis tributingchamber 6 and the inlet side of the adjacent secondary nozzle. The central ystratum of air and top and bottoni strata of gas will become mixed in passing,r thiiougb the secondary nozzle 25 which, with the primary nozzle 21, is fastened by bolts 26 to the outlet side of the gas distributing chainber (i (see Figs. 3 and 4), the partitions 27` 27, preventing mixing.;r of the air and ges streams within the primary nozzle 21.

The secondary nozzle 25 projects forwardly and its outlet end is in close prox iinity to the flaring inlet end 28fl of the mix ing chamberQi-l which is formed integral with the ignition chamber 294 and in 'which the stratified gas and air become thoroughly mixed. The outlet end of the secondary no'/n zle 25 and inletend of the mixing;r chamber 28 eo-act to form two secondary air inlets 30, 80, through which air is drawn from the atmosphere into the `mixing chamber 28. 'lhe adjacent sides oi' the secondary nozzle 25 and the mixingf chamber 2S are connected by bolts 3l to maintain these` adjacent ends in spaced relation.

'lhe ignition `olniimber 29 is built into an opening in tlu i'ront ond oi thil combustion chamber 32 of the steam boiler furnace to ,which our improved burner is shown applied, and a rcfractorv lningii 3R is provided in the iirnition (bambi-i'l 29 as woll as iii the re-v trartory lined combustion chamber 3:2 ol the boiler furnaro. removable cover 3H which is adapted to boplaoed in position manually, is |'iroyiderl tq entirely shut will' or 4rlosi' the inli-t opi-liinglo ibimixing chamber so as to brrvrnt air being1r drawn into the`boi|er i"|n nace by the slack draft when any one partirular boiler fin-nario ol a battery ol boilers is'not in use,

'l`he oywration of our improi'ed gas burner .primary nozzle,

`will be readily understood. The blast furl nace gases from the gas box 4 is caiisedto pass through the primary nozzle 21 at high speed and in two thin Hat streams, and Causes air lo be injected or drawn through the air tubes 1i' into the nozzle 2l between the two streams of iras. The central sheet oi air becomes mixed with the inner layers oi the (g-on'ibnstible ,gases in passing through the :wcoiularyv nozzle into the mixing,r chamber 2i The outeiJ layers or Streams of gas and iiiteririediate layer or stream oi' air. iii passing into the mixing chamber 28 causes air to be drawn into the mixing chami` bor through the top and bottoni openings 30, 2&0, formed by the inlet end 2S oi the mix4 ingr chan'iber and adjacent outlet end of the secondary iiozzleil so that in enteringr the mixing chamber 28 there are two thin flat streams of gas sandwiched between a. central nd two outside streams of air. The strata ai and las entering the mixing chamber :s are thoroughly commingled and as the Tirim'ary nozzle is machined the mixture of gas and air is uniformly distributed over the iaitire width of the gas burner in a thin wi ie stream, and owing to the uniform miX- 1. of gas and air entering the mixino' chamber, the amount of excess air require( is low and results in a high temperature of combustion, while the thin layers of gas are so thoroughly mixed with the air as to completely burn in the combustion chamber of the boiler furnace.

'Ihe advantages of our invention will be appai'ent'to those skilled in the art. The apparatus is simple, is easily and cheaply constructed and will not require frequent and corres )ondingly expensive repairs.

Modifications in the construction and arrangement of the parts may be made Without departing from our invention as defined in the appended claims.

1. In a` gas burner, the combination with a combustion chamber7 an ignition chamber opening into tte. combustion chamber, and ay mixing,r cnamb r opening into the ignition chamber, oi' a secondary nozzle arranged to discharge air and combustible gases into said mixingr chamber in thin flat stratified loyers, the adjacent ends of said mixing chamber and nozzle forming secondary air inlets openingT into the mixing chamber from theV atmosphere and arranged to deliver inflat thin stream of air to the mixing chamber above and below the stratified streams of combustible gases from the secondary noz-` zlq, a primary nozzle opening yinto said secondary nozzlil and ari-angled to deliver a plurality of thin Hat stratified streams of combustible gases and an intermediate layer of air into the secondary nozzle,.a gas distributing chamber for supplying gases to the a series of air tubes in said a plurality of stratified layers into Suid mixingr chamber, a series of air tubes in said distributing chamber arranged to deliver air centra-lltY into said mixing chamber, said tubes havingr Haring ends opening,r into the distributingr chamber and havinigT rcar ends connecting' into the atmosphere, means for supplying ccmhustiblc rases to the distributing chamber, :ind asians for regulating the air supply to 'said nir tubes.

7i In a, gas burner, the combination with n combustion chamber. an inwardly flaring; ignition chan'iber opening' into said combustion chamber` and n inixin,"r Chamber openingr into said ignition chamber, of a burner nozzle discharginglr niiand combustible gases into said mixing' chan'iben the adjacent ends of said mixing chamber and noxzle foi-mimer secondary air inlets opening into said mixin,"r chamber from the atmosphere, a dstributing;r chamber connected to the entrance end of the said nozzle and arranged to deliver the combustible gases in a nliu'alityV of stratified layers into said mixingr Chamber, a series of air tubes `in said distributing chamber arranged to deliver air centrally into said mixing1 chi-milieu said tubes having flaringr ends opening into tbe distributing chamber and havin;r rear ends Connecting into the atmosphere, moans 'nr controlling the supply of een'ibustiiile gases to said distributing chamber` means for supplying' eoinbustible gases t0 the distributing chember., and means for regulating the air supply to said air tubes.

8. In a gas burner,- thc combination with a combustion chamber, an inwardly flaringr ignition chamber openingr into said combustion chamber, and a mixing` chamber epening into said ignition chamber, of a burner nozzle discharging air and combustible gases into said mixingT chamber, the adjacent ends of said mixing chamber and nozzle forming;r secondary air inlets openingr inte said mixing chamber from the atmosphere, a distributing' chamber connected to the entrance end of the said nozzle and arranged to deliver the combustible ,gases in a plurality of stratified layers into said mixine,V chamber, a series of air tubes in said distributiner chamber arranged to deliver air` centrally into said mixing chamberb Said tubes having flaring ends opening into the distributing' chamber and havingr rear ends connectingi into the atniesphere, means for v supplying combustible ,frases to the distribntinilr chamber, and means for regulating the supply of gases and nir to the gas burner. i

In testimonv 'whereof we have hereunto set our hands.

FRED KLiNG. LUTHER B. WEIDLEIN. 

